Global Patent Index - EP 0722777 B1

GPI coverage and content

You can use Global Patent Index (GPI) to carry out detailed searches of the EPO’s worldwide bibliographic and legal event data collections (DOCDB and INPADOC, also used in Espacenet and PATSTAT) and download or visualise the results for statistical analysis

Current content: 123 711 965 patent documents

This week's update (05/06/2020 12:00 CET):

224 639 new documents added

1 141 291 documents amended

GPI key values

Run regular monitoring (e.g. monthly or quarterly) of technical areas or companies

Use built-in charts to visualise technical trends and patenting activity of companies

Choose the data you want to see and download to focus on what you are interested in

Run data quality assessments to measure the risk of incomplete search results

More information

GPI user manual (PDF), free trial and subscription information are available on the EPO website

Title (fr)

Publication

Application

Priority

DE 19501830 A 19950121

DE 19508293 A 19950309

Abstract (en)

[origin: EP0722777A1] The method involves raw slag being separated into at least two fractions and the first fraction has a particle size of up to 80 mm, pref. 32 mm in a first phase. The screen overflow from the first phase is supplied to the wet slag separator (4). The through-fall through the screen and through the fire rack is sent to a second screen phase (5) to separate the fine material. The screen overflow from the second phase is mechanically pulverised after sorting out the metal and inert materials and the through-fall from the second phase is sent to a melting furnace (7) for separate processing. A third screen phase (8) can be included.